before buying the NanoPi Fire3, I wanted to know a few things about it.So I asked the support and got:

Yes, adb is supported,but there is one thing that needs attention.the USB interface on the computer does not provide enough power for the Fire3,so you need to power the Fire3 in other ways,such as using the DuPont line to connect directly to the 5V and GND pins.

I didn't find anything about this DuPont line on the store. What could I buy to power this board ?Thanks.